427720687122 has 32 divisors (see below), whose sum is σ = 897794264448. Its totient is φ = 135586411136.

The previous prime is 427720687111. The next prime is 427720687133. The reversal of 427720687122 is 221786027724.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (427720687111) and next prime (427720687133).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8934003 + ... + 8981750.

It is an arithmetic number, because the mean of its divisors is an integer number (28056070764).

Almost surely, 2^427720687122 is an apocalyptic number.

427720687122 is an abundant number, since it is smaller than the sum of its proper divisors (470073577326).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

427720687122 is a wasteful number, since it uses less digits than its factorization.

427720687122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17915954.

The product of its (nonzero) digits is 1053696, while the sum is 48.

The spelling of 427720687122 in words is "four hundred twenty-seven billion, seven hundred twenty million, six hundred eighty-seven thousand, one hundred twenty-two".